KR20010032455A - Cylinder head gasket for internal combustion engine - Google Patents
Cylinder head gasket for internal combustion engine Download PDFInfo
- Publication number
- KR20010032455A KR20010032455A KR1020007005696A KR20007005696A KR20010032455A KR 20010032455 A KR20010032455 A KR 20010032455A KR 1020007005696 A KR1020007005696 A KR 1020007005696A KR 20007005696 A KR20007005696 A KR 20007005696A KR 20010032455 A KR20010032455 A KR 20010032455A
- Authority
- KR
- South Korea
- Prior art keywords
- gasket
- metal plates
- cylinder head
- head gasket
- bridge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 61
- 239000011324 bead Substances 0.000 claims abstract description 27
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 229920001971 elastomer Polymers 0.000 claims abstract description 11
- 239000000806 elastomer Substances 0.000 claims abstract description 11
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 239000012530 fluid Substances 0.000 claims description 10
- 239000000498 cooling water Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
- F16J15/0818—Flat gaskets
- F16J15/0825—Flat gaskets laminated
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
- F16J15/0818—Flat gaskets
- F16J2015/085—Flat gaskets without fold over
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
- F16J15/0818—Flat gaskets
- F16J2015/0856—Flat gaskets with a non-metallic coating or strip
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Abstract
본 발명에 따른 내연 기관용 실린더 헤드 개스킷은 밀봉 탄성 중합체 비드(13)를 수납하도록 의도된 슬롯(10)에 의해 서로 분리되는 중심 본체 부분과 외주 부분을 각각 구비하고, 그 각각의 2개의 부분이 국부적으로 브리지(12)에 의해 각각 연결되며, 그것이 중첩되었을 때에 서로 합치되는 슬롯(10) 속에 개스킷의 양 측면으로부터 돌출되는 동일한 하나의 밀봉 탄성 중합체 비드(13)가 채워 넣어지는 2개의 중첩된 유사한 금속판(2, 3)과, 2개의 금속판을 측방향으로 고정시키기 위한 수단(9)을 포함한다.The cylinder head gasket for an internal combustion engine according to the present invention has a central body portion and a peripheral portion separated from each other by a slot 10 intended to receive a sealing elastomer bead 13, each of which two portions being local. Two overlapping similar metal plates each connected by a bridge 12, which are filled with the same one sealing elastomer bead 13 projecting from both sides of the gasket into the slot 10 which coincides with each other when they overlap. (2, 3) and means (9) for laterally fixing the two metal plates.
Description
실린더 헤드 개스킷은 내연 기관의 엔진 블록과 실린더 헤드와의 사이에 장착되어 연소실의 밀봉과, 특히 엔진의 냉각에 사용되는 액체 및 엔진의 윤활에 사용되는 액체와 같은 유체에 대한 밀봉을 제공하도록 의도된 것이다.The cylinder head gasket is intended to be mounted between the engine block of the internal combustion engine and the cylinder head to provide sealing of the combustion chamber and, in particular, fluids such as liquids used for cooling the engine and liquids used for lubrication of the engine. will be.
그러한 밀봉의 조건은 그것이 연소실의 주위에서의 고온 가스에 대한 밀봉인지 아니면 연소실의 외부에서의 유체에 대한 밀봉인지의 여부에 따라 달라진다.The condition of such a seal depends on whether it is a seal against hot gases around the combustion chamber or a fluid against the outside of the combustion chamber.
즉, 가스에 대한 밀봉은 금속 점화 링에 의해 달성되는데 반해, 유체에 대한 밀봉은 탄성 중합체 비드를 사용하여 달성된다.That is, sealing to gas is achieved by a metal ignition ring, while sealing to fluid is accomplished using elastomeric beads.
개스킷의 코어를 형성하는 금속판을 사용하여 실린더 헤드 개스킷을 제조하는 방안은 이미 공지된 것이다. 유체에 대한 밀봉을 제공하도록 의도된 탄성 중합체 비드는 개스킷의 양 측면 상에서 예컨대 스크린 인쇄 기법 또는 과잉 주조 기법을 사용하여 금속판의 2개의 측면 상에 형성된 홈의 내부에 배치된다.A method for producing a cylinder head gasket using a metal plate forming the core of the gasket is already known. Elastomer beads intended to provide a seal against the fluid are disposed on both sides of the gasket in the interior of the grooves formed on the two sides of the metal plate, for example using screen printing or overcast techniques.
그러한 탄성 중합체 비드는 유체에 대한 양호한 밀봉을 제공하지만, 개스킷이 엔진 블록과 실린더 헤드와의 사이에 클램핑되었을 때에 손상되기 쉽다는 것이 단점으로 지적되고 있다. 특히, 클램핑력이 미리 정해진 값을 초과하면, 비드가 파열되어 그 밀봉 기능을 상실하게 된다. 그러한 손상을 피하기 위해, 개스킷 상에는 조임을 한정하는 스토퍼가 마련될 필요가 있다.Such elastomeric beads provide good sealing against the fluid, but it is pointed out that the gasket is prone to damage when clamped between the engine block and the cylinder head. In particular, if the clamping force exceeds a predetermined value, the bead ruptures and loses its sealing function. To avoid such damage, it is necessary to provide a stopper on the gasket to limit the tightening.
본 발명은 내연 기관용 실린더 헤드 개스킷에 관한 것이다.The present invention relates to a cylinder head gasket for an internal combustion engine.
도 1은 실린더 헤드 개스킷의 부분 사시도;1 is a partial perspective view of a cylinder head gasket;
도 2는 본 발명에 따른 실린더 헤드 개스킷을 이루는 2개의 금속판의 분해 사시도;2 is an exploded perspective view of two metal plates forming a cylinder head gasket according to the present invention;
도 3 및 도 4는 도 1의 Ⅲ-Ⅲ 선 및 Ⅳ-Ⅳ 선을 따라 각각 취한 본 발명에 따른 실린더 헤드 개스킷의 2개의 확대 단면도.3 and 4 are two enlarged cross-sectional views of the cylinder head gasket according to the present invention, taken along line III-III and IV-IV of Fig. 1, respectively.
본 발명의 목적은 소수의 구성 요소로부터 얻어지고 가스와 유체의 양자에 대한 밀봉 특성이 모두 뛰어난 실린더 헤드 개스킷을 제공하는 것이다.It is an object of the present invention to provide a cylinder head gasket which is obtained from a few components and which has excellent sealing properties for both gas and fluid.
그러한 목적을 달성하기 위해, 개스킷의 코어를 형성하는 금속판과, 냉각수 및 오일과 같은 유체에 대한 밀봉을 제공하도록 의도된 탄성 중합체 비드로 이루어지는 유형의 본 발명의 대상의 실린더 개스킷은To achieve that object, a cylinder gasket of the present invention of the type consisting of a metal plate forming the core of the gasket and an elastomeric bead intended to provide a seal against fluids such as cooling water and oil,
- 밀봉 탄성 중합체 비드를 수납하도록 의도된 슬롯에 의해 서로 분리되는 중심 본체 부분과 외주 부분을 각각 구비하고, 그 각각의 2개의 부분이 국부적으로 브리지에 의해 각각 연결되는 2개의 중첩된 유사한 금속판,Two superimposed similar metal plates each having a central body portion and a peripheral portion separated from each other by slots intended to receive sealing elastomer beads, each of which two portions being respectively connected by a local bridge,
- 2개의 금속판이 중첩되었을 때에 서로 합치되는 슬롯 속에 채워 넣어져서 개스킷의 양 측면으로부터 돌출되는 동일한 하나의 밀봉 탄성 중합체 비드, 및The same one sealing elastomeric bead, which is enclosed in slots that coincide with each other when the two metal plates overlap and protrudes from both sides of the gasket, and
- 2개의 금속판을 측방향으로 고정시키기 위한 수단을 포함하는 것을 그 특징으로 한다.-Means for securing the two metal plates laterally.
그러한 개스킷은 2개의 금속판과 탄성 중합체 비드라는 단지 3개의 요소로 이루어진다는 점에서 그 구조가 매우 간단하다. 2개의 금속판을 서로 결합시키는 탄성 중합체 비드는 그러한 금속판이 조임 한정 스토퍼로서 작용할 수 있도록 하면서도 금속판의 내부에서의 유체 흐름을 차단함으로써 유체에 대한 밀봉을 제공한다.Such a gasket is very simple in structure in that it consists of only three elements: two metal plates and an elastomeric bead. The elastomeric beads that join the two metal plates together provide a seal against the fluid by allowing such metal plates to act as tightening stoppers while blocking the fluid flow inside the metal plates.
밀봉 비드의 연속성을 보장하기 위해, 2개의 금속판의 브리지는 각각의 금속판마다 서로 교대되어 2개의 금속판이 조립되었을 때에 그 브리지가 서로 엇갈린 위치를 차지하게 되고, 각각의 금속판의 브리지는 그 금속판의 중간 평면에 대해 편심된 채로 배치되어 2개의 금속판이 조립되었을 때에 그 브리지가 대략 개스킷의 두께의 중간쯤에 놓이게 된다.To ensure the continuity of the sealing beads, the bridges of the two metal plates are alternated with each other for each metal plate so that when the two metal plates are assembled, the bridges occupy the mutually staggered positions, and the bridge of each metal plate is the middle of the metal plate. Placed eccentrically with respect to the plane, when the two metal plates are assembled, the bridge lies approximately in the middle of the gasket thickness.
본 발명의 또 다른 특징에 따르면, 2개의 금속판을 측방향으로 고정시키기 위한 수단은 그 금속판에 형성되어 2개의 금속판이 중첩되었을 때에 포개어지도록 의도된 서로 대응하는 보스로 이루어진다. 2개의 금속판을 측방향으로 고정시키기 위한 그러한 수단은 2개의 금속판이 밀봉 탄성 중합체 비드에 의해 서로 결합되기 전에 그 고정 작용을 발휘하게 된다.According to another feature of the invention, the means for laterally fixing the two metal plates consists of bosses which are formed on the metal plate and which are intended to be superimposed when the two metal plates overlap. Such means for securing two metal plates laterally exert their fixing action before the two metal plates are joined to each other by sealing elastomer beads.
개스킷이 손상을 일으킴이 없이 적당히 변형될 수 있도록 하기 위해, 각각의 밀봉 비드는 횡단면에서 보았을 때에 개스킷의 각각의 측면으로부터 돌출되는 하나 이상의 리브 및 개스킷의 각각의 측면으로부터 후퇴되는 하나 이상의 홈을 나타내는 것이 바람직하다.In order to allow the gasket to deform properly without causing damage, each sealing bead exhibits one or more ribs protruding from each side of the gasket when viewed in cross section and one or more grooves retracted from each side of the gasket. desirable.
본 발명의 또 다른 특징에 따르면, 2개의 금속판은 서로 떨어진 채로 대면되어 연소실에 대응하는 개구부를 둘러싼 점화 링을 형성하는 리브를 구비한다.According to another feature of the invention, the two metal plates are provided with ribs which face away from each other to form an ignition ring surrounding the opening corresponding to the combustion chamber.
여하튼, 본 발명은 본 발명을 한정하지 않는 예로서의 실린더 헤드 개스킷의 일실시예를 도시하고 있는 첨부 도면을 참조로 한 이후의 설명으로부터 명확히 이해될 수 있을 것이다.In any event, the invention will be clearly understood from the following description with reference to the accompanying drawings which show one embodiment of a cylinder head gasket as an example which does not limit the invention.
본 발명에 따른 실린더 헤드 개스킷은 3개의 요소, 즉 개스킷의 코어를 형성하는 2개의 유사한 금속판과 밀봉 탄성 중합체 비드로 이루어진다. 다시, 금속판은 상부 판(2)과 하부 판(3)으로 이루어진다. 각각의 금속판은 연소실에 대응하는 개구부(4), 윤활 오일을 통과시키기 위한 개구부(5), 냉각수를 통과시키기 위한 개구부(6) 및 개스킷을 엔진 블록과 실린더 헤드와의 사이에 클램핑하기 위한 개구부(7)를 구비한다. 금속판(2, 3)은 연소실의 구역에서 서로 떨어진 채로 대면되어 점화 링을 형성하는 리브(8)를 구비한다. 또한, 금속판(2, 3)은 프레스 가공에 의해 얻어진 다수의 보스(9)를 구비하는데, 특히 도 4에 도시된 바와 같이 금속판(3)의 보스(9)는 금속판(2)의 보스(9)의 암형 부분 속에 맞물리도록 의도된 것이다. 그러한 보스(9)는 2개의 금속판(2, 3)이 중첩되었을 때에 그 2개의 금속판(2, 3)이 측방향으로 고정될 수 있도록 한다. 각각의 금속판(2, 3)은 슬롯(10)에 의해 서로 분리되는 중심 본체 부분과 외주 부분을 구비한다. 중심 본체 부분과 외주 부분은 브리지(12)에 의해 연결된다.The cylinder head gasket according to the invention consists of three elements, two similar metal plates forming the core of the gasket and sealing elastomer beads. Again, the metal plate consists of an upper plate 2 and a lower plate 3. Each metal plate has an opening 4 corresponding to the combustion chamber, an opening 5 for passing lubricating oil, an opening 6 for passing coolant, and an opening for clamping a gasket between the engine block and the cylinder head ( 7). The metal plates 2, 3 have ribs 8 which face away from each other in the zone of the combustion chamber to form an ignition ring. In addition, the metal plates 2 and 3 have a plurality of bosses 9 obtained by press working. In particular, as shown in FIG. 4, the bosses 9 of the metal plate 3 are the bosses 9 of the metal plate 2. It is intended to engage in the female part of). Such a boss 9 allows the two metal plates 2, 3 to be fixed laterally when the two metal plates 2, 3 overlap. Each metal plate 2, 3 has a central body portion and an outer circumferential portion separated from each other by the slot 10. The central body portion and the outer circumferential portion are connected by a bridge 12.
특히 도 3에 도시된 바와 같이, 2개의 금속판(2, 3)의 브리지(12)는 각각의 금속판마다 서로 교대되어 2개의 금속판이 조립되었을 때에 그 브리지가 서로 엇갈린 위치를 차지하게 된다. 또한, 각각의 금속판(2, 3)의 브리지(12)는 그 금속판의 중간 평면에 대해 편심된 채로 배치되어 2개의 금속판이 조립되었을 때에 그 브리지가 대략 개스킷의 두께의 중간쯤에 놓이게 된다.In particular, as shown in Fig. 3, the bridges 12 of the two metal plates 2 and 3 are alternated with each other so that the bridges occupy a staggered position when the two metal plates are assembled. In addition, the bridge 12 of each metal plate 2, 3 is arranged eccentric with respect to the middle plane of the metal plate so that when the two metal plates are assembled, the bridge lies approximately in the middle of the thickness of the gasket.
2개의 금속판(2, 3)이 중첩되고 난 후에는 슬롯(10)의 내부에 탄성 중합체 비드(13)가 사출 성형된다.After the two metal plates 2 and 3 overlap, the elastomer beads 13 are injection molded inside the slot 10.
도 3 및 도 4에 도시된 바와 같이, 그러한 비드는 브리지가 없는 구역에서는 2개의 금속판을 연결하고, 2개의 금속판 중의 하나가 중심 본체 부분과 외주 부분을 연결하는 브리지를 구비한 구역에서는 브리지를 덮는다.As shown in Figs. 3 and 4, such beads connect two metal plates in an area without a bridge, and one of the two metal plates covers a bridge in an area with a bridge connecting a central body part and an outer peripheral part. .
특히 도 3 및 도 4에 도시된 바와 같이, 탄성 중합체 비드(13)는 횡단면에서 보았을 때에 개스킷의 각각의 측면으로부터 돌출되는 2개의 리브(14) 및 개스킷의 각각의 측면으로부터 후퇴되는 하나 이상의 홈(15)을 구비한다.3 and 4, the elastomeric beads 13 have two ribs 14 protruding from each side of the gasket and one or more grooves retracting from each side of the gasket when viewed in cross section. 15).
금속판이 클램핑 한정 스토퍼로서 작용하여 탄성 중합체 비드(13)가 개스킷의 두께의 범위 내에서 압축될 수 있는 한, 그 탄성 중합체 비드는 개스킷이 엔진 블록과 실린더 헤드와의 사이에 클램핑되었을 때에 손상되어 그 밀봉 기능을 상실할 위험이 없이 압축되어질 것이다.As long as the metal plate acts as a clamping confinement stopper so that the elastomer beads 13 can be compressed within the range of the thickness of the gasket, the elastomer beads are damaged when the gasket is clamped between the engine block and the cylinder head. It will be compressed without the risk of losing the sealing function.
전술된 설명으로부터 명확한 바와 같이, 본 발명은 구조가 간단하고 탁월한 신뢰성을 보이는 내연 기관용 실린더 헤드 개스킷을 제공함으로써 선행 기술을 현격히 개선시키고 있다.As is clear from the foregoing description, the present invention significantly improves the prior art by providing a cylinder head gasket for an internal combustion engine with a simple structure and excellent reliability.
말할 것도 없이, 본 발명은 예로서 전술된 그러한 개스킷의 실시예에 한정되는 것이 아니고, 오히려 그 모든 변형을 포함하는 것이다. 따라서, 특히 2개의 금속판(2, 3)을 측방향으로 고정시키기 위한 수단은 본 발명의 범위를 결코 벗어남이 없이 보스가 아니라 점용접부로 이루어질 수도 있다.Needless to say, the invention is not limited to the embodiments of such gaskets described above by way of example, but rather to encompass all such modifications. Thus, in particular, the means for fixing the two metal plates 2, 3 laterally may also consist of spot welds, not bosses, without ever departing from the scope of the invention.
본 발명에 따른 내연 기관용 실린더 헤드 개스킷에서는 2개의 금속판(2, 3)이 리브(8)에 의해 클램핑 한정 스토퍼로서 작용하고, 그에 따라 탄성 중합체 비드(13)가 개스킷의 두께의 범위 내에서 압축될 수 있어 개스킷이 클램핑되었을 때에 탄성 중합체 비드가 손상되어 그 밀봉 기능을 상실하는 위험이 없게 된다. 또한, 본 발명에 따른 실린더 헤드 개스킷은 2개의 금속판(2, 3)과 탄성 중합체 비드(13)라는 단지 3개의 요소로 이루어진다는 점에서 그 구조가 매우 간단하다.In the cylinder head gasket for the internal combustion engine according to the invention, the two metal plates 2, 3 act as clamping confining stoppers by the ribs 8, so that the elastomer beads 13 can be compressed within the range of the thickness of the gasket. The elastomeric beads can be damaged when the gasket is clamped so that there is no risk of losing its sealing function. Furthermore, the cylinder head gasket according to the invention is very simple in that it consists of only three elements: two metal plates 2, 3 and elastomeric beads 13.
Claims (6)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9801573A FR2774430B1 (en) | 1998-02-05 | 1998-02-05 | CYLINDER HEAD GASKET FOR INTERNAL COMBUSTION ENGINE |
FR98/01573 | 1998-02-05 | ||
PCT/FR1999/000241 WO1999040346A1 (en) | 1998-02-05 | 1999-02-04 | Cylinder-head gasket for internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20010032455A true KR20010032455A (en) | 2001-04-25 |
Family
ID=9522813
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020007005696A Withdrawn KR20010032455A (en) | 1998-02-05 | 1999-02-04 | Cylinder head gasket for internal combustion engine |
Country Status (7)
Country | Link |
---|---|
US (1) | US6371489B1 (en) |
EP (1) | EP1053420A1 (en) |
JP (1) | JP2002502945A (en) |
KR (1) | KR20010032455A (en) |
BR (1) | BR9908356A (en) |
FR (1) | FR2774430B1 (en) |
WO (1) | WO1999040346A1 (en) |
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-
1998
- 1998-02-05 FR FR9801573A patent/FR2774430B1/en not_active Expired - Fee Related
-
1999
- 1999-02-04 WO PCT/FR1999/000241 patent/WO1999040346A1/en not_active Application Discontinuation
- 1999-02-04 EP EP99902591A patent/EP1053420A1/en not_active Withdrawn
- 1999-02-04 US US09/601,734 patent/US6371489B1/en not_active Expired - Fee Related
- 1999-02-04 BR BR9908356-6A patent/BR9908356A/en not_active Application Discontinuation
- 1999-02-04 KR KR1020007005696A patent/KR20010032455A/en not_active Withdrawn
- 1999-02-04 JP JP2000530724A patent/JP2002502945A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
EP1053420A1 (en) | 2000-11-22 |
FR2774430A1 (en) | 1999-08-06 |
US6371489B1 (en) | 2002-04-16 |
BR9908356A (en) | 2001-10-02 |
JP2002502945A (en) | 2002-01-29 |
WO1999040346A1 (en) | 1999-08-12 |
FR2774430B1 (en) | 2000-04-21 |
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